<template>
  <div class="home-category"
       @mouseleave="currentid = null">
    <!-- 左侧菜单栏 -->
    <ul class="menu">
      <li v-for="item in categorylist"
          :key="item.id"
          @mouseenter="currentid = item.id"
          :class="{ active: currentid === item.id }">
        <RouterLink :to="`/category/${item.id}`">{{ item.name }}</RouterLink>
        <template v-if="item.children">
          <RouterLink v-for="sub in item.children"
                      :key="sub.id"
                      :to="`/category/sub/${sub.id}`">{{ sub.name }}</RouterLink>
        </template>
        <!-- 没有数据时显示 -->
        <template v-else>
          <XtxSkeleton width="60px"
                       height="18px"
                       style="margin-left: 5px"
                       bg="rgba(255,255,255,0.2)"
                       :animated="true"></XtxSkeleton>
          <XtxSkeleton width="50px"
                       height="18px"
                       style="margin-left: 5px"
                       bg="rgba(255,255,255,0.2)"
                       :animated="true"></XtxSkeleton>
        </template>
      </li>
    </ul>
    <!-- 弹层 -->
    <div class="layer">
      <h4>
        {{ currentgoods && currentgoods.id === 'brand' ? '品牌' : '分类' }}推荐
        <small>根据您的购买或浏览记录推荐</small>
      </h4>
      <ul v-if="currentgoods && currentgoods.goods">
        <li v-for="item in currentgoods.goods"
            :key="item.id">
          <RouterLink :to="`/product/${item.id}`">
            <img :src="item.picture"
                 alt="" />
            <div class="info">
              <p class="name ellipsis-2">{{ item.desc }}</p>
              <p class="desc ellipsis">{{ item.name }}</p>
              <p class="price"><i>¥</i>{{ item.price }}</p>
            </div>
          </RouterLink>
        </li>
      </ul>
      <!-- 品牌 -->
      <ul v-if="currentgoods && currentgoods.brands">
        <li class="brand"
            v-for="brand in currentgoods.brands"
            :key="brand.id">
          <RouterLink to="/">
            <img :src="brand.picture"
                 alt="" />
            <div class="info">
              <p class="place">
                <i class="iconfont icon-dingwei"></i>{{ brand.place }}
              </p>
              <p class="name ellipsis">{{ brand.name }}</p>
              <p class="desc ellipsis-2">{{ brand.desc }}</p>
            </div>
          </RouterLink>
        </li>
      </ul>
    </div>
  </div>
</template>

<script>
import { reactive, computed, ref } from 'vue'
import { useStore } from 'vuex'
import { getbrand } from '@/apis/home'
export default {
  name: 'HomeCategory',
  setup () {
    const store = useStore()
    const addcate = reactive({
      id: 'brand',
      name: '品牌',
      children: [{ id: 'brand-children', name: '品牌推荐' }],
      brands: []
    })
    // 品牌数据
    getbrand().then((value) => {
      addcate.brands = value.result
    })
    // 左侧菜单栏数据
    const categorylist = computed(() => {
      const newlist = store.state.category.list.map((item) => ({
        id: item.id,
        name: item.name,
        children: item.children && item.children.slice(0, 2),
        goods: item.goods
      }))
      newlist.push(addcate)
      return newlist
    })
    // 弹出层显示的商品
    const currentid = ref(null)
    const currentgoods = computed(() => {
      return categorylist.value.find((item) => item.id === currentid.value)
    })
    return { categorylist, currentid, currentgoods }
  }
}
</script>

<style scoped lang="less">
.home-category {
  width: 250px;
  height: 500px;
  background: rgba(0, 0, 0, 0.8);
  position: relative;
  z-index: 99;
  .menu {
    li {
      padding-left: 40px;
      height: 50px;
      line-height: 50px;
      &:hover,
      &.active {
        background: @xtxColor;
      }
      a {
        margin-right: 4px;
        color: #fff;
        &:first-child {
          font-size: 16px;
        }
      }
    }
  }
  // 弹层样式
  .layer {
    width: 990px;
    height: 500px;
    background: rgba(255, 255, 255, 0.8);
    position: absolute;
    left: 250px;
    top: 0;
    display: none;
    padding: 0 15px;
    h4 {
      font-size: 30px;
      font-weight: normal;
      line-height: 80px;
      small {
        font-size: 16px;
        color: #666;
      }
    }
    ul {
      display: flex;
      flex-wrap: wrap;
      li {
        width: 310px;
        height: 120px;
        margin-right: 15px;
        margin-bottom: 15px;
        border: 1px solid #eee;
        border-radius: 4px;
        background: #fff;
        &:nth-child(3n) {
          margin-right: 0;
        }
        a {
          display: flex;
          width: 100%;
          height: 100%;
          align-items: center;
          padding: 10px;
          &:hover {
            background: #e3f9f4;
          }
          img {
            width: 95px;
            height: 95px;
          }
          .info {
            padding-left: 10px;
            line-height: 24px;
            width: 190px;
            .name {
              font-size: 16px;
              color: #666;
            }
            .desc {
              color: #999;
            }
            .price {
              font-size: 22px;
              color: @priceColor;
              i {
                font-size: 16px;
              }
            }
          }
        }
      }
      li.brand {
        height: 180px;
        a {
          align-items: flex-start;
          img {
            width: 120px;
            height: 160px;
          }
          .info {
            p {
              margin-top: 8px;
            }
            .place {
              color: #999;
            }
          }
        }
      }
    }
  }
  &:hover {
    .layer {
      display: block;
    }
  }
}
</style>
